I remember some Blizzard employee (Dustin Bowder?) saying that they use Faceposer for the character lipsynch. If they relied on third-party tools for that kind of scripting, no wonder they can't release them.

Well, they can release the scripts without face poser. We just need the scripts, then the community can create new scripts based on the information contained in the blizzard scripts, which will result in Blizzard being free of blame.

But you have a good point. A scary one, but imo something to watch out for. Man, I hope they do release the scripts. It would be such a waste if they didn't.